Currency is the one big thing missing! though I guess it would also be the most complicated type of unit to implement accurately, if wanted it to be over the air up-datable to be always accurate, but I'd love to have it.

Once you've picked a measure to convert, there doesn't seem to be an elegant way to change your mind. So if you pick Power, but decide against entering any units, touching the "Converter" button puts you in an endless loop. There's always the Home button, but that doesn't seem right...

i work in the Digital Postproduction Industry and i would love to see conversion between Film lenght like 35mm to Frames or Timecode values to frames... is that possible ? we tought about coding our own app, but no there is one but lacking that functionality

I am using your app on iphone 1.1.3. It is great but on currency conversion, i noted that even after updating exchange rates, currency conversion is not updated. For my currency conversion from CAD$ to US$ is same for last three days even though I verfied from other web sites that it is not the same.